Achieve # 13 Weeks 2-4

[506002081]

Hi,

I am not sure what i am doing wrong for this problem. I am given that e. coli is 2.4micrometers long and to find the Energy of the photon that has a 2.4micrometer wavelength. From here, I convert 2.4micrometers to meters 2.4 x 10^-6 m. I then divide this by c speed of light and get 8.00 x 10^15 . From here I multiply that by plancks constant in order to get the energy of the photon. I arrive at 5.30 x 10^9 as an answer but it says this is wrong.

What am I doing wrong?

[Caitlin Chen 3F]

To find the energy of the photon, we use the equations E = hv and c = λv (or v = c/λ), which combined would be E = hc/λ. So you should be dividing hc by 2.4 x 10^-6.